Granted Patent
Utility
US 5,266,679 · App. 07/752,738
Method for producing polyamide-imides from CO, bis-imide and polyamine
Inventors:
Robert Perry, S. Richard Turner, Richard W. Blevins
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Aug 30, 1991
Inventors
Robert Perry
S. Richard Turner
Richard W. Blevins
Assignee (at issue)
EASTMAN KODAK COMPANY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.